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Ask HN: video manipulation libraries?
Anybody has any good/bad experiences with libraries that do programmatic video manipulation? Especially something that can be driven by a scripting language. Free/inexpensive if possible...
Thanks in advance!
- brk 16y agoLike what exactly? I've found ffmpeg and OPENrtsp both pretty easy to setup and use for basic video conversion and simple stuff. Not sure though if you're just trying to convert to a different format, add watermarks, detect scene activity, or something different.
- hernan7 16y agoOne thing I want to do is to interleave video from 2 cameras to do something like this: http://www.well.com/~jimg/stereo/stereo_list.html http://www.well.com/~jimg/stereo/stereo_list.html for a movie instead of a single picture. So, something that I can use to slice and interleave 2 movie clips would be useful.
- brk 16y agoHoly crap, that is nausea-inducing. If you didn't want to do it in real-time you could do this with ffmpeg and some perl (or whatever). ffmpeg can turn a movie clip into a series of sequentially-numbered jpgs (or GIFs or PNGs). Take both the movies, convert them to a shit-ton of images, and then feed a series of images back into ffmpeg to make a movie. Basically take all the Even-numbered image files from the left camera, and the odd's from the right camera and squirt them back through a script and ffmpeg and out to a movie.
- billpg 16y agohttp://stackoverflow.com/questions/651759/c-grab-frame-from-wmv-file http://stackoverflow.com/questions/651759/c-grab-frame-from-... http://stackoverflow.com/questions/44161/real-time-wmv-video-encoding-in-c http://stackoverflow.com/questions/44161/real-time-wmv-video...
- pavlov 16y agoFor anything related to computer vision, OpenCV: http://opencv.willowgarage.com/wiki http://opencv.willowgarage.com/wiki It also includes a bunch of useful generic image processing routines like scaling, convolutions, etc.